Can you sell or donate gray hair?

While there may be specific companies or organizations interested in acquiring gray hair for various purposes, the general idea of buying or selling individual hair does not have a significant commercial market. Some potential uses for gray hair might include artistic endeavors, crafting, wig-making, or even scientific research, but these uses are usually small-scale and do not result in widespread buying and selling as a commodity. Therefore, there are no established avenues for selling or donating gray hair for direct monetary gains.